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NAD C541i Service Manual

Other manuals for C541i: Owner's Manual

Summary of C541i

  • Page 1

    Nad c 541i c o m pa c t disc player c 541i comp act disc pla yer ser vice manual.

  • Page 2: Safety Information

    2 catuion hgkjdhsgkjhgsjk advarsel hgkjdhsgkjhgs kbvnclknbcvlknlknvlkncvncl vk jk advarsel hgklfh;l;hjm nmd hfkljhjldkljlkdjlkfhjhsgmmkjhgsjk varin g hgkjdhsgkjhgklgd jh klhk fg;lkng;lkjgf;lkjg f;lkjfl;sjk varo! Hgkjdhsgkjhjbjkbkjbjkgs kbvnc lknbcvlknlknvlkncvncl vk jk vorsict! Hgklfh;l;hhbhh jd jhf...

  • Page 3: Service Safety Precautions

    3 service safety precautions 1. Replacing the fuses caution: for continued protection against the risk of fire replace only with same type of fuse. Reference no part number description m507 *ah 5120-0052-0 fuse t1.6a 250v 5x20mm m507 *c 5120-0050-0 fuse t1.6a 250v 5x20mm m512, m513 *ah 5120-0020-0 f...

  • Page 4: Specifications

    4 specifications disc capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . One disc, 120 or 80 mm decoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Burr-brown delta sigma 24bit digital filter . . . . . . . . . . . . . . . . . . . . . ....

  • Page 5: Rear Panel / Front Panel

    5 1. Line out 2. Digital optical & coaxial output 3 nad link in / out 4. Ir input 5. Trigger in 6. Trigger switch 7. Ac line cord 1. Power on / off 2. Disc drawer 3. Display 4. Open 5. Play / pause 6. Time 7. Stop 8. Repeat 9. Random 10. Scan back ( ) / forward ( ) 11. Skip back ( ) / forward ( ) 12...

  • Page 6: Disassembly Instructions

    6 disassembly instructions 1. Remove machine screws m 4.0 x 6.0 ( 1 to 4 ) from the side panels. Remove tapping screw 3.0 x 8.5 ( 5 )from the back panel. Refer to figure no.1. Figure no.1 2. Pull both sides of the top cover slightly outwards 6 and tilt approx. 35˚ and then remove in the direction as...

  • Page 7: Block Diagram

    7 block diagram u301 m38b59ef system control cpu & vfl display driver q401- q403 mute circuit q301-q304 mute m313 rca jack q603 q307 m313 ir_in m318 rca jack digital output u402 nad link micro- controller u403 74hc00 nand gate nad link in m501 vfl display m314 trigger switch m315 trigger in nad link...

  • Page 8: Wiring Diagram

    8 wiring diagram m102 (16pin) m301a m505a m506a m120a m105a (6pin) cd mechanism live bo ard displa y bo ard key bo ard main bo ard led bo ard m101 (5pin) brown black neutral live red m502 transformer.

  • Page 9: Rf Pattern Testing

    9 rf pattern testing testing point nad - c 541i pcb testing points diagram testing procedure (1) load the test disc (sony test cd yeds-7) and set the unit into play mode. (2) connect the scope to r227 (pin 15 of u101) and dgnd (j144). Scope setting: coupling : ac. Vertical sensitivity : 0.2 v/ div. ...

  • Page 10: Important Notes

    10 important notes instruction for handling optical system block pick-up electrostatic breakdown of the laser diode in the optical system block may occur due to a potential difference caused by electrostatic charge accumulated on clothing, human body, etc. A ground must be provided as follows to pre...

  • Page 11

    11 precautions when changing laser pick-up when removing the pick-up assembly, short circuit the pcb tracks on the optical block as show in the drawing in order to protect the pick-up before removal. Note: replacement pick-up assemblies are supplied with the pcb pattern already protected. Do not rem...

  • Page 12: Pcb Layout

    12 pcb layout display board key board live board led board.

  • Page 13

    14 13 main board.

  • Page 14

    L302 10uh vcc r308 3k r309 3k x301 4.00m unld load xrst xlat clok data scor sysm rw/rom/ldoff rw/rom/ldoff sclk sqck 1/2x cd/cdr disco di/sw r331 4k 7 r332 1k r333 4k 7 r328 4k7 r327 4k 7 r334 4k 7 sqso sens c301 33p c302 33p c303 0.01u 1 2 3 q311 8050 d303 in4148 r312 10k r311 100k c308 10u/16v vcc...

  • Page 15

    Sl+ 1 sl- 2 rcin1 3 srdr 4 sfdr 5 vrefi 6 vrefo 7 gnd 8 frdr 9 ffdr 10 rcin2 11 fcs+ 12 fcs- 13 gnd1 14 mute 15 trk+ 16 trk- 17 rcin3 18 tfdr 19 trdr 20 vcc 21 vcc1 22 vbin 23 spdr 24 vbin1 25 sp- 26 sp+ 27 gnd2 28 gnd 29 gnd 30 u202 ba6392 sqso 1 sqck 2 xrst 3 sysm 4 data 5 xlat 6 clok 7 sens 8 scl...

  • Page 16

    18 vc 1 vdd 2 e 3 d 4 a 5 b 6 c 7 f 8 gnd 9 ld 10 vr 11 pd 12 fcs+ 13 trk+ 14 trk- 15 fcs- 16 m102 16pin ld 1 pd 2 eq_in 3 ac_sum 4 gnd 5 a 6 b 7 c 8 d 9 e 10 f 11 sw 12 dvcc 13 dvc 14 rfac 15 fe 16 fei 17 te 18 te_bal 19 ce 20 cei 21 vcc 22 rfg 23 bst 24 vfc 25 rfc 26 vc 27 rfdco 28 rfdci 29 dc_ofs...

  • Page 17

    19 lrsy romxa ck2 clko m302a 16.9344mhz c328 20p c329 20p dgnd dgnd c320 10u/16v agnd c324 10u/16v agnd c376 100u/25v c378 224k r356 3k6 r360 1 6 k c353 100p r396 4 k 7 a-12v agnd r364 1k5 r368 2k2 r372 2k2 c357 2700p c363 4700p c367 680p c369 100u/25v c382 224k r376 75r r374 100k r380 75r 1 2 m317a...

  • Page 18

    20 1 2 3 4 5 6 7 8 9 10 11 m502 transformer toroid m507 t1.6a 250v m514 t315ma 250v m512 t1a 250v m513 t1a 250v j801 120v j802 230v ac1 cordest 1 2 3 4 m810 tln120a150w3r0 m802 power_sw c800 4700p ferrite ring only in c version d514 in4001 d516 in4001 c543 104k c541 104k c501 104k d515 1n4001 d517 1...

  • Page 19

    21 1 3 2 m313 ir_in 3 2 1 u601a lm393 c605 680p l601 27mh r611 100k r606 1k5 5 6 7 u601b lm393 r604 1k8 r605 10k 4 8 u601c lm393 c606 104k c609 100u/10v 1 2 3 4 5 j602a rmo q602 2sc1923 q603 2sc1923 r622 10k r623 10k r614 202k r615 10k c607 100p dgnd rem_in d+5v ir dgnd r603 10k r609 10k r631b 220 r...

  • Page 20: Ic Block Diagram

    22 main board u101: cxa2581n ic block diagram ac sum ac vca eq_on/off vc d vcc r w/r om r w/r om r w/r om r w/r om r w/r om r w/r om r w/r om vc vc vc dv c dv c v ofst v ofst b c a d v ofst eq apc 23 rfg 24 bst 26 rfc 25 vfc 14 dvc 27 vc 5 gnd 22 vcc 1 ld 2 pd 12 sw 11 e 10 f 9 d 8 c 7 b 6 a 15 rf a...

  • Page 21

    23 main board u201: cxd3017q clock generator efm demodurator error corrector 16k ram digital out d/a interface serial-in interface over sampling digital filter pwm pwm timing logic 3rd-order noise shaper sub code processor servo auto sequencer servo interface servo block dac block signal processor b...

  • Page 22

    24 port p5(8) 8 port p6(6) 6 port p7(8) 8 port p8(8) ram 8 port p9(2) 2 port p0(8) a-d converter (10-bit x 12 channel) serial i/o serial i/o1(clock-synchronized) (256 byte automatic transfer) serial i/o2 (clock-synchronized or uart) timers timer x(16-bit) timer 1(8-bit) timer 2(8-bit) timer 3(8-bit)...

  • Page 23

    25 1 28 ml/i 2 s lrcin 2 27 mc/dem din 3 26 md/fss bckin serial input i/f mode control i/f sck bpz control crystal/osc xti xto clko vcc1 agnd1 vdd dgnd power supply power-on reset hdcd 8x oversampling digital filter with enhanced multi-level delta signal modulator dac low-pass filter voutl v cc 2l a...

  • Page 24

    26 amplifier 1 output inverting input non-inverting input v – amplifier 2 v + output inverting input non-inverting input 1 2 3 4 8 7 6 5 + – – + main board u305, u306: opa2604 a1 b1 y1 a2 b2 y2 gnd vcc b4 a4 y4 b3 a3 y3 1 2 3 4 5 6 7 14 13 12 11 10 9 8 main board u403: tc74hc00ap out in gnd main boa...

  • Page 25: Troubleshooting Guide

    27 troubleshooting guide set power switch to on. Is power turned on ? Check fuses m507, m512-m514 open ? M507,m512-m514 defective crystal x301 defective. Microprocessor ic u401 defective. Motor drive transistor q104, q105, q106, q107 defective. Can tray be opened ? Can tray be closed ? Does initial ...

  • Page 26: Electrical Parts List

    28 display assembly pcb board 1000 * pcb-n0a20c-disp display assembly vfd m501 2460-1870-0 vfd 6-bt-271gk led led1 3700-2810-r led red 3mm sp l-93xhd ir sensor m113 4816-043t-3 ir sensor pic-26043tm2 connector wires m505a 7009-9620-0 conn wire assy 12p 100mm m506a 7010-2224-0 conn wire assy awg28 ke...

  • Page 27

    29 capacitor c800 8910-0049-0 cap400v 4700p de7150f472mva1kc power switch m802 5200-3151-0-01 power switch transformer m810 *c 1806-2170-0 emi filter tln12ua 150w3r0 transformer assembly transformer m500 1806-2512-0 transformer n0870c i/p 120/230v toroidal fuse assembly fuses m507 *ah 5120-0052-0 fu...

  • Page 28

    30 c308,c325,c334 157d-106m-5-gmk ce 16v 10µf 20% rl 4x7 c310 157b-107m-5-kmk ce 6.3v 100µf 20% rl 6x7 c320,c321,c323,c324,c332 157d-106m-5-iuf3 ce 16v 10µf 20% rl 5x11 roa elna c322,c386 150f-104k-2-fc cc 50v 0.1µf 10% at 3.5x2 c328,c329 15ch-200j-5-gg ctc 0/60 20pf 5% rl 4x4 c352,c353 150f-101j-5-...

  • Page 29

    31 d305 4805-3930-2 diode 1n5393 200v 1.5a d403 4837-3v31-2 dz 1/2w 3.1-3.5v rohm at 4837-3a31-2 dz 1/2w 3.16~3.38v rohm d404 4804-1480-2 diode 1n4148 at d409,d411-d415,d426,d431 4804-1480-2 diode 1n4148 at d501-d504,d506-d508 4804-0010-2 diode 1n4001 at d505 4840-1140-0 zd 1.3w 3.3v 5% at d510 4837...

  • Page 30

    32 q401,q403 4860-0660-5 tr 2sa1015 (g.R.) rl q402 4851-012f-5 tr 2sd1012f/g hfe 160-560 q404 485a-114e-5 tr dta114esa rohm q405 485c-114e-5 tr dtc114es rohm q502 485a-950y-5 tr 2sa950-y hfe 100-200 q602,q603 4851-9230-5 tr 2sc1923-0 hfe 70-140 resistors r101 4701-100j-2 rcf 1/8w 10r 5% at r103,r104...

  • Page 31

    33 r375,r376,r379,r380,r384 4711-750a-c rmf 1/8w 75r 1% ats r377,r378 4711-472a-2 rmf 1/8w 4.7k 1% at r381,r382 4711-472a-2 rmf 1/8w 4.7k 1% at r383 4711-151a-c rmf 1/8w 150r 1% ats r390-r393 4717-221j-c rmf 1/2w 220r 5% ats r394-r397 4711-472a-2 rmf 1/8w 4.7k 1% at r402 4711-102a-2 rmf 1/8w 1k 1% a...

  • Page 32: Mechanism Exploded View

    34 mechanism exploded view 27 11 3 15 28 29 22 10 1 9 24 (x2) 21 (x4) (x2) (x4) 23 30 31 (x2) 8 26 26 5 12 17 16 6 25 (x2) (x2) 14 32 20 13 25 19 18 (x2) 2 7 4 wsl-2130ccm.

  • Page 33

    35 1 4102-9000-0 outside main chassis 1 2 4102-9001-0 tray 1 3 4102-9002-0 subchassis 1 4 4102-9003-0 chucking plate 1 5 4102-9004-0 drive gear 1 6 4102-9005-0 control cam 1 7 4102-9006-0 chucking pulley 1 8 4102-9007-0 gear cover 1 9 4102-9008-0 tray gear 1 10 4102-9009-0 intermediate gear 1 11 410...

  • Page 34: Exploded View

    36 exploded view.

  • Page 35: Exploded View Parts List

    37 0001 1465-5706-3 fasscia w/ss paint 1 0002 1402-3781-2 starp 1 0003*ah 1402-3522-0 chassis w/ss paint 1 0003*c 1402-3523-0 chassis w/ss paint 1 0005 1402-3530-0 cover 1 0006 2442-1000-0 power button 1 0007 4154-4191-0 cd door w/ss paint 1 0008 3716-4316-0 window lens w/ss 1 0010 2444-1201-0 butto...

  • Page 36: Packing Diagram

    38 packing diagram 36 37 38 36 41 42 40 39 44 43 45 item part no. Description q’ty 36 1490-3783-1 polyfoam endcap 2 37 1497-1332-1 unit polybag 1 38 1497-1432-0 fascia cover 1 39 4060-0530-0 batteries 2 40 2103-7302-1 rca cable 1 41 8912-0005-0 remote control handdset 1 42 1497-1302-0 remote control...

  • Page 37: Ser

    Ser vice manual © nad 2002 c 541i comp act disc pla yer nad electronics international toronto.